On the contentious side, Menelaus represents his clients in a wide variety of jurisdictions and arbitral bodies such as LMAA, ICC, and LCIA tribunals, as well as the English High Court and Appellate Courts. Menelaus also specialises in enforcement action and is regularly instructed in relation to arrests, attachments, and asset tracing. He has extensive experience acting for clients in disputes concerning fraud and obtaining injunctive relief.

His practice includes non-contentious commercial matters, and he regularly advises clients on commercial contracts. He is also active in sale and purchase deals with a particular focus on asset finance. Menelaus also provides regular advice in respect of various international sanctions regimes.

Menelaus is a Lord Denning Scholar of the Honourable Society of Lincoln's Inn and was called to the bar prior to being admitted as a solicitor.